Studies on the Porous Flow Laws in the Contact Zone between Water and Polymer Flooding in Class Ⅱ Oil Layers with Large Physical Models
Based on the materials of Bei 2 West block of Sabei development area in Daqing Oil Field,large-scale artificial heterogeneous physical models are established to make displacement experimentsin laboratory for studying the laws of water／oil motion in the contact zone between water flooding andpolymer flooding in class Ⅱ oil layers．Formation conditions．well spacing and pattern and connectionbetween well group of Sabei development area have been simulated with the model. Three oildisplacement experiments,which are matched with different injecting intensity in the contact zonebetween water drive and polymer drive,are carried out. Through alteration observed about oil recovery,water cut,concentration of polymer and tracer,the porous flow laws of oil and water at the site of classⅡ oil layers,water and polymer contact zone and third encryption are identified. It is concluded in thispaper that the optimum injectmg intensity ratio of water flooding to polymer flooding is 1：1 or also inthe contact zone between water and polymer driving in class Ⅱ oil layers under the good conditionsbetween injection and production wells．
Polymer flooding Class Ⅱ oil layers Contact zone Injecting intensity Physical model
LI Yiqiang NI Hongtao
College of Engineering, Peking University, Beijing 100871 Key Laboratory of EOR of Ministry of Education, Daqing Petroleum Institute, Daqing 163318
国际会议
2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)
武汉
英文
57-62
2009-04-26（万方平台首次上网日期，不代表论文的发表时间）